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                  publisher="IBM developerWorks">
<article level="Intermediate" date="December-2001">
<title>Java configuration with XML Schema</title>
<author>
     <firstname>Marcello</firstname>
     <lastname>Vitaletti</lastname>
</author>
  </article>
  </journal>
</catalog>
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<catalog>
<!--An XML catalog-->
<?target instruction?>
  <journal title="XML Zone"
                   publisher="IBM developerWorks">
<article level="Introductory" date="October-2002">
<title>Create flexible and extensible XML schemas</title>
<author>
     <firstname>Ayesha</firstname>
     <lastname>Malik</lastname>
</author>
  </article>
  </journal>
</catalog>
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